Bindings don't work in coalesce

gremlin> graph = EmptyGraph.instance()
==>emptygraph[empty]
gremlin> g = graph.traversal().withRemote('conf/remote-graph.properties')
==>graphtraversalsource[emptygraph[empty], standard]
gremlin> g.addV('fof').property('key',234)
==>v[0]
gremlin> b = new Bindings()
==>{}
gremlin> g.withBindings(b).V().has('fof','key',234).coalesce(__.V().has(b.of('l','fof'), b.of('k', 'key'), b.of('v',234)), __.addV(b.of('nl','fof')).property(b.of('sk','key'), b.of('sv',234))).property(b.of('nk','newkey'), b.of('nv','newvalue')).asAdmin().getBytecode()
==>[[], [V(), has(fof, key, 234), coalesce([[], [V(), has(fof, key, 234)]], [[], [addV(fof), property(key, 234)]]), property(binding[nk=newkey], binding[nv=newvalue])]]